An example of alpha decay is the historically important transformation of radium 226 into radon 222 through the emission of an alpha particle. This reaction releases 4.6 MeV, and leaves behind a radioactive noble gas (radon), which is what allowed Rutherford to observe the process in Montreal in 1898.

What is the decay equation for radon-222?

Radon-222 has an atomic number (Z) of 86 so an atom of radon-222 contains 86 protons in its nucleus. We now have a description of the particle lost as a nucleus that contains 4 nucleons, two of the nucleons are protons….Alpha Decay.

4 He α
2

Radon. Radon (Rn-222) is an odorless and colorless natural radioactive gas. It is produced during the radioactive decay of radium-226, itself a decay product of uranium-238 found in many types of crustal materials, that is, rocks and soils.

### What is the alpha decay reaction of radium 222?

Decay properties Radon-222 itself alpha decays to polonium-218 with a half-life of approximately 3.82 days, making it the most stable isotope of radon. Its final decay product is stable lead-206.

What is the nuclear equation for the alpha decay of radium-226?

22688Ra→22286Rn+42He.

What is the balanced nuclear equation for the alpha decay of radium-226 to radon?

## When radium-226 undergoes alpha decay What will be the mass number of the product *?

Rn-222
For example, alpha decay generates Rn-222 with atomic number 86 and the mass number 222 from Ra-226 with the atomic number 88 and the mass number 226.

What is alpha decay formula?

Alpha Decay Equation In α-decay, the mass number of the product nucleus (daughter nucleus) is four less than that of the decaying nucleus (parent nucleus), while the atomic number decreases by two. In general, the alpha decay equation is represented as follows: Z A X → Z − 2 A − 4 Y + 2 4 He.